Calibration of nondispersive infrared photometer

Details Calibration of nondispersive infrared photometer Calibration of nondispersive infrared photometer

1989-06-01

1991-03-26

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, 2502521, 73 1G, G01N 2161

Patent

active

050031759

ABSTRACT:
The photometer is calibrated by using a permanently built-in installation of four, similarly configured chambers in a good heat conducting carrier which is slidably interposed between sample and reference chambers on one hand and the detection structure on the other hand. One pair of these chambers is placed in the paths during measurement and is filled with inert gas, the other pair has one chamber filled with calibration gas, the other one with inert gas. All chambers are closed with similar windows.

REFERENCES:
patent: 2674696 (1954-04-01), Smith et al.
patent: 3072787 (1963-01-01), Moyat
patent: 3193676 (1965-07-01), Smart
patent: 3560738 (1971-02-01), Strange
patent: 3805074 (1974-04-01), McCormack
patent: 4204768 (1980-05-01), N'Guyen
patent: 4673812 (1987-06-01), Yoneda
patent: 4794255 (1988-12-01), Miyatake et al.

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